Below, there is a problem that I just cannot solve, I've tried all kinds of ways but nothing works. So by getting a large variety of opinions and solutions, I can be able to solve this problem.
Let f(x) =1/(x-8). Calculate the difference quotient
If someone now told you that the derivative (slope of the tangent line to the graph) of f(x) at x=6 was -1/n^2 for some integer n what would you expect n to be?
Thanks you in advance